EP1981196A1 - Passives optisches netzwerk, geräte und verfahren zur unterstützung des multicast-dienstes - Google Patents

Passives optisches netzwerk, geräte und verfahren zur unterstützung des multicast-dienstes Download PDF

Info

Publication number
EP1981196A1
EP1981196A1 EP07702163A EP07702163A EP1981196A1 EP 1981196 A1 EP1981196 A1 EP 1981196A1 EP 07702163 A EP07702163 A EP 07702163A EP 07702163 A EP07702163 A EP 07702163A EP 1981196 A1 EP1981196 A1 EP 1981196A1
Authority
EP
European Patent Office
Prior art keywords
optical
optical signal
demultiplexer
onu
multicast service
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP07702163A
Other languages
English (en)
French (fr)
Other versions
EP1981196B1 (de
EP1981196A4 (de
Inventor
Wei Huang
Huafeng Lin
Jun Zhao
Feng Wang
Tao Jiang
Jun Chen
Yuntao Wang
Guo Wei
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of EP1981196A1 publication Critical patent/EP1981196A1/de
Publication of EP1981196A4 publication Critical patent/EP1981196A4/de
Application granted granted Critical
Publication of EP1981196B1 publication Critical patent/EP1981196B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0226—Fixed carrier allocation, e.g. according to service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H04J14/0228—Wavelength allocation for communications one-to-all, e.g. broadcasting wavelengths
    • H04J14/023—Wavelength allocation for communications one-to-all, e.g. broadcasting wavelengths in WDM passive optical networks [WDM-PON]
    • H04J14/0232—Wavelength allocation for communications one-to-all, e.g. broadcasting wavelengths in WDM passive optical networks [WDM-PON] for downstream transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H04J14/0238—Wavelength allocation for communications one-to-many, e.g. multicasting wavelengths
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H04J14/0241—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths
    • H04J14/0242—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON
    • H04J14/0245—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for downstream transmission, e.g. optical line terminal [OLT] to ONU
    • H04J14/0246—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for downstream transmission, e.g. optical line terminal [OLT] to ONU using one wavelength per ONU
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H04J14/0241—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths
    • H04J14/0242—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON
    • H04J14/0249—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for upstream transmission, e.g. ONU-to-OLT or ONU-to-ONU
    • H04J14/025—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for upstream transmission, e.g. ONU-to-OLT or ONU-to-ONU using one wavelength per ONU, e.g. for transmissions from-ONU-to-OLT or from-ONU-to-ONU
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0278—WDM optical network architectures
    • H04J14/0282—WDM tree architectures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation

Definitions

  • the present invention relates to Passive Optical Network (PON) technology, and more particularly to a Wavelength Division Multiplexed Passive Optical Network (WDM-PON) for supporting multicast service, an Optical Line Terminal (OLT) used in the WDM-PON, an Optical Network Unit (ONU), a multiplexer/demultiplexer, and a method for realizing multicast service using the WDM-PON.
  • PON Passive Optical Network
  • WDM-PON Wavelength Division Multiplexed Passive Optical Network
  • OLT Optical Line Terminal
  • ONU Optical Network Unit
  • multiplexer/demultiplexer a multiplexer/demultiplexer
  • the PON is a user access network that could meet the bandwidth requirements for the above high speed data service, which is cost-saved and convenient for operation and maintenance.
  • the PON mainly includes: an OLT located in the central office, an Optical Distribution Network (ODN) and multiple ONUs.
  • the ODN conventionally consists of a multiplexer/demultiplexer and fibers for connecting the multiplexer/demultiplexer with the OLT and ONUs.
  • the multiplexer/demultiplexer is configured to demultiplex an optical signal from the OLT and transmit demultiplexed optical signals to each of the ONUs respectively.
  • the multiplexer/demultiplexer is also configured to multiplex optical signals from each of the ONUs and output a multiplexed optical signal to the OLT.
  • the PON may be classified into a plurality of different types, such as, the Asynchronous Transfer Mode over PON (ATM-PON) which is based on ATM, the Ethernet over PON (EPON) which is based on Ethernet, the Gigabit PON (GPON) which has a rate of gigabits, the WDM-PON which is in combination with WDM technique, the Optical Code Division Multiple Access Passive Optical Network (OCDMA-PON) which is in combination with Code Division Multiple Access (CDMA) technique, etc.
  • ATM-PON Asynchronous Transfer Mode over PON
  • EPON Ethernet over PON
  • GPON Gigabit PON
  • WDM-PON which is in combination with WDM technique
  • OCDMA-PON Optical Code Division Multiple Access Passive Optical Network
  • the WDM-PON is of a point-to-point network structure.
  • a point-to-point network conventionally transmits multicast service data in a manner of multiple replication in-band.
  • high processing capability of the OLT is required, and a complex multicast protocol is necessary for supporting the multicast service.
  • the processing capability of the OLT becomes the bottleneck of the WDM-PON system.
  • the bandwidth resource of the system is wasted.
  • Embodiments of the present invention provide a WDM-PON which can save the bandwidth resource of the system and decrease the requirements for the processing capability of an OLT.
  • Embodiments of the present invention further provide an OLT, a multiplexer/demultiplexer and an ONU.
  • Embodiments of the present invention further provide a method for realizing the multicast service and cable TV (CATV) broadcasting, which can decrease the requirements for the processing capability of an OLT and save the bandwidth resource of a WDM-PON system greatly.
  • CATV cable TV
  • a WDM-PON includes an OLT, a multiplexer/demultiplexer and n ONUs.
  • the OLT is configured to carry downstream unicast data respectively transmitted to the n ONUs onto optical signals having different wavelengths, carry one or more channels of multicast service data respectively onto one or more optical signals having specific wavelengths, multiplex the optical signals having different wavelengths and the optical signals having specific wavelengths into one optical signal, and transmit the optical signal to the multiplexer/demultiplexer.
  • the multiplexer/demultiplexer is configured to divide the optical signals having different wavelengths from the OLT, perform power allocation on the optical signals having specific wavelengths for carrying the multicast service data, and wavelength-selectively output the optical signals carrying the downstream unicast data of the n ONUs.
  • the n ONUs are respectively configured to process the multicast service data outputted from the multiplexer/demultiplexer so as to obtain the multicast service data and their own downstream unicast data respectively.
  • An OLT includes an OLT downstream processing module, being configured to carry downstream unicast data, respectively transmitted to n ONUs, onto optical signals having different wavelengths, carry one or more channels of multicast service data respectively onto one or more specific optical signals with wavelengths, multiplex the optical signals having different wavelengths and the optical signals having specific wavelengths into one optical signal, and transmit the optical signal to a multiplexer/demultiplexer.
  • the multiplexer/demultiplexer includes a coarse wavelength demultiplexer, configured to divide a received optical signal into one or more channels of optical signals having specific wavelengths carrying the multicast service and optical signals for carrying downstream unicast data of each of the ONUs.
  • the multiplexer/demultiplexer further includes a 1: n AWG, being configured to divide the optical signals, which carry the downstream unicast data of each of the ONUs, from the coarse wavelength demultiplexer to obtain n channels of optical signals having different wavelengths, and route the optical signals having different wavelengths to n output terminals of the AWG respectively.
  • n AWG being configured to divide the optical signals, which carry the downstream unicast data of each of the ONUs, from the coarse wavelength demultiplexer to obtain n channels of optical signals having different wavelengths, and route the optical signals having different wavelengths to n output terminals of the AWG respectively.
  • the multiplexer/demultiplexer further includes a splitter with a splitting ratio of 1: a , being configured to perform power allocation on the optical signals having specific wavelengths from the coarse wavelength demultiplexer, split the power of the optical signals into a portions, and output the a portions of the split optical signals to a combiners respectively.
  • a splitter with a splitting ratio of 1: a being configured to perform power allocation on the optical signals having specific wavelengths from the coarse wavelength demultiplexer, split the power of the optical signals into a portions, and output the a portions of the split optical signals to a combiners respectively.
  • the multiplexer/demultiplexer further includes a combiners, each of which being connected to one output terminal of the AWG and one output terminal of the splitter, and being configured to couple the optical signals having specific wavelengths from the splitter to a output branches of the AWG.
  • n is a natural number
  • a is a natural number that is larger than 1 and less than or equal to n .
  • the ONU includes an ONU downstream processing module, which is configured to process the signal from the corresponding output terminal of the multiplexer/demultiplexer and obtain the downstream unicast data corresponding to the ONU itself and the multicast service data respectively.
  • a method for implementing multicast service in a WDM-PON system includes:
  • a method for realizing cable television (CATV) broadcasting in a WDM-PON network includes:
  • multicast service can be carried onto one or more optical signals having specific wavelengths, and thus the problem of the wasting of the bandwidth resource caused by the manner of in-band multiple replicas in the related art can be effectively solved, and the bandwidth resource of the system can be effectively saved. Moreover, because there is no need to support a complex multicast protocol in the OLT in the WDM-PON system, the complexity of the OLT can be reduced.
  • the quality of service of other real-time services can be ensured by separating multicast service to use a single wavelength for transmission, thereby the quality of service of the WDM-PON system can be ensured much better.
  • Fig.1 is a schematic diagram of the infrastructure of the current PON system
  • Fig.2 is a schematic diagram of the function of a multiplexer/demultiplexer used in a WDM-PON according to a preferred embodiment of the present invention
  • Fig.3 is a schematic diagram of the infrastructure of a WDM-PON according to a preferred embodiment of the present invention.
  • Fig.4 is a schematic diagram of the system structure for realizing multicast service in a WDM-PON according to another preferred embodiment of the present invention.
  • Fig.5 is a schematic diagram of the system structure for realizing CATV service and multicast service in a WDM-PON according to another preferred embodiment of the present invention
  • Fig.6 is a schematic diagram of the internal structure of a multiplexer/demultiplexer according to a preferred embodiment of the present invention.
  • Fig.7 is a schematic diagram of the internal structure of a multiplexer/demultiplexer according to another preferred embodiment of the present invention.
  • Fig.8 is a flowchart of a method for realizing multicast service according to a preferred embodiment of the present invention.
  • a preferred embodiment of the present invention provides a WDM-PON system for supporting multicast service, for example, a WDM-PON system for supporting multicast service and/or broadcast service and/or cable television (CATV) service.
  • Fig.3 shows the infrastructure of the WDM-PON system according to the embodiment.
  • the WDM-PON system mainly includes: an OLT, a multiplexer/demultiplexer, n ONUs and fibers connecting the OLT, the multiplexer/demultiplexer and the n ONUs, where n is a natural number.
  • the OLT is configured to carry n channels of downstream unicast data to be respectively transmitted to the n ONUs into n optical signals respectively having different wavelengths, carry one or more channels of multicast service data into one or more optical signals respectively having specific wavelengths, multiplex the optical signals respectively having different wavelengths and the optical signals having specific wavelengths into one optical signal, and output the one optical signal to the multiplexer/demultiplexer.
  • the OLT is configured to separate upstream optical signals from each of the ONUs, recover upstream data of each of the users after performing detection and demodulation on the upstream optical signals, and output the retrieved upstream data to a superior equipment.
  • the multiplexer/demultiplexer is configured to: separate the optical signals having different wavelengths received from the OLT; perform power allocation or power splitting on an optical signal having specific wavelength which carries multicast service, such as an optical signal having a wavelength of ⁇ m , that is, concurrently output the optical signal having specific wavelength through part or all of output terminals; and selectively outputting, according to wavelength, n channels of the optical signals having other wavelengths which carry downstream unicast data of each of the ONUs respectively, that is, output the optical signals of different wavelengths through predetermined corresponding output terminals respectively.
  • the multiplexer/demultiplexer is configured to multiplex n channels of upstream signals, which have different wavelengths and are from different ONUs respectively, to obtain an optical signal, and output the optical signal to the OLT.
  • an ONU In the downstream direction, an ONU is configured to process a signal from one of the output terminals of the multiplexer/demultiplexer to obtain the multicast service data and the downstream unicast data corresponding to the ONU respectively.
  • the ONU In the upstream direction, the ONU is configured to carry its upstream data onto an optical signal having predetermined wavelength, and output the optical signal to the multiplexer/demultiplexer.
  • the OLT further includes an OLT downstream processing module, an OLT upstream processing module and a first optical circulator.
  • the first optical circulator is connected to the OLT downstream processing module, the OLT upstream processing module and the multiplexer/demultiplexer, and is configured to output the downstream optical signal from the OLT downstream processing module to the multiplexer/demultiplexer, and output the upstream optical signal from the multiplexer/demultiplexer to the OLT upstream processing module.
  • the OLT downstream processing module includes a downstream data separator, configured to separate, from downstream service data, the multicast service data and n channels of downstream unicast data respectively transmitted to the n ONUs.
  • the OLT downstream processing module further includes a multicast service data transmission pre-processing module which is configured to receive broadcast data (for example, the CATV signal) from the superior equipment and/or multicast service data from the downstream data separator, and perform process and amplification on the broadcast data and/or multicast service data to obtain one or more optical signals having one or more specific wavelengths, which carry one or more channels of the multicast service data.
  • broadcast data for example, the CATV signal
  • process and amplification on the broadcast data and/or multicast service data to obtain one or more optical signals having one or more specific wavelengths, which carry one or more channels of the multicast service data.
  • the multicast service data transmission pre-processing module optically amplifies the optical signal from the superior equipment, which carries the broadcast data, directly by an optical amplifier. For the one or more channels of the multicast service data from the downstream data separator, the multicast service data transmission pre-processing module modulates the multicast service data into one or more optical signals having specific wavelengths, and performs related processes to the modulated optical signals. Accordingly, the multicast service data transmission pre-processing module further includes an optical amplifier for optically amplifying the broadcast data, and/or one or more lasers for generating optical signals having specific wavelengths, and one or more modulators for modulating the multicast service data into the optical signals having specific wavelengths. The functions of the lasers and the modulators could be implemented in a separate Direct Modulation Laser (DML).
  • DML Direct Modulation Laser
  • the OLT downstream processing module further includes a primary wide-spectrum laser source for generating a wide-spectrum optical signal.
  • the WDM-PON may further include an alternate wide-spectrum laser source for providing backup wide-spectrum optical signals when the primary wide-spectrum laser source fails.
  • the OLT downstream processing module further includes a first Array Waveguide Grating (AWG) which is configured to process a wide-spectrum optical signal outputted from the primary wide-spectrum laser source or backup wide-spectrum laser source to generate n channels of optical signals, each of which has respective wavelength among the wavelengths of ⁇ 1 ⁇ n , thus providing laser sources having different wavelengths for an optical modulator array.
  • AMG Array Waveguide Grating
  • the OLT downstream processing module further includes an optical modulator array including n modulators, which is configured to modulate the downstream unicast data corresponding to the n ONUs from the downstream data separator into the n channels of optical signals, which are outputted from the first AWG and have wavelengths of ⁇ 1 ⁇ n , respectively.
  • the OLT downstream processing module further includes a multiplexer.
  • the multiplexer is configured to multiplex the one or more optical signals having special wavelengths (for example, ⁇ m , ⁇ b and so on) and n channels of optical signals having the wavelengths of ⁇ 1 ⁇ n respectively, into an optical signal; and output the multiplexed optical signal to the first optical circulator.
  • the one or more optical signals having special wavelengths may carry the multicast service data; and the n channels of optical signals may carry the downstream unicast data of the n ONUs, respectively.
  • the multiplexer may be a coupler, an AWG or other multiplexing equipments.
  • the OLT upstream processing module includes a second AWG, which is configured to divide the upstream optical signal of the first optical circulator to obtain n channels of optical signals, which have wavelengths of ⁇ 1 ⁇ n respectively.
  • the OLT upstream processing module further includes a Photodiode or Photo Detector (PD) array, i.e., PD array.
  • PD array includes n PDs configured to convert one channel of upstream optical signal from the second AWG to an electrical signal respectively.
  • the OLT upstream processing module further includes a demodulator array.
  • the demodulator array consists of n demodulators, which are configured to demodulate electrical signals outputted from the Photodiode or PD array and recover the upstream data of each of the ONUs, respectively.
  • the ONU in the WDM-PON shown in Fig.3 includes an ONU downstream processing module, an ONU upstream processing module and a second optical circulator.
  • the second optical circulator is connected to the ONU upstream processing module, the ONU downstream processing module and the multiplexer/demultiplexer.
  • the second optical circulator is configured to output an upstream optical signal from the ONU upstream processing module to the multiplexer/demultiplexer, and output a downstream optical signal from the multiplexer/demultiplexer to the ONU downstream processing module.
  • the ONU downstream processing module includes a coarse wavelength demultiplexer.
  • the coarse wavelength demultiplexer is configured to divide an optical signal outputted from the multiplexer/demultiplexer to obtain the optical signals having different wavelengths.
  • the divided optical signals include an optical signal having a wavelength among ⁇ 1 ⁇ n and optical signals having specific wavelengths, such as ⁇ m and/or ⁇ b .
  • the optical signal having a wavelength among ⁇ 1 ⁇ n is used for carrying downstream unicast data corresponding to the ONU, and the optical signals having specific wavelengths are used for carrying multicast service.
  • the ONU downstream processing module further includes a PD array consisting of a plurality of PDs, the number of which is determined based on the number of multicast services. If x channels of multicast service are carried, the PD array may include x +1 PDs, in which, one of the PDs is configured to convert the optical signal carrying downstream unicast data corresponding to the ONU, among the optical signals having wavelengths of ⁇ 1 ⁇ n from the coarse wavelength demultiplexer, into an electrical signal, and another x PDs are respectively configured to convert the optical signals having specific wavelengths from the coarse wavelength demultiplexer, which carry channels of the multicast services, into electrical signals.
  • the ONU downstream processing module further includes a demodulator array consisting of a plurality of demodulators, the number of which corresponds to the number of the PDs in the PD array.
  • One of the demodulators is configured to demodulate the electrical signal carrying the downstream unicast data of the ONU to obtain the downstream unicast data of the ONU, and another demodulators are respectively configured to demodulate the electrical signals outputted from the PD array, which carry channels of the multicast service data, to obtain each channel of the multicast service data.
  • the ONU upstream processing module includes a modulator, which is configured to modulate the upstream data of the ONU into an optical signal.
  • the optical signal is necessary for the ONU to transmit the upstream data.
  • the optical signal may be either from the OLT or generated by the ONU itself. If the optical signal is generated by the ONU itself, the ONU upstream processing module needs to include a light source, as shown in Fig.3 .
  • a dynamic operating process for realizing multicast service by the WDM-PON is described, in combination with Fig.4 , through another preferred embodiment of the invention.
  • the process for realizing multicast service using the WDM-PON includes: multicast service data is firstly extracted from data stream from the superior equipment by the downstream data separator; the extracted multicast service data is modulated by the modulator into an optical signal having the wavelength of ⁇ m outputted from a specific wavelength laser; the modulated optical signal is amplified by an optical amplifier; and the amplified optical signal having the wavelength of ⁇ m , which carries the multicast service data, is multiplexed by the multiplexer with the n channels of optical signals, which have the wavelengths of ⁇ 1 ⁇ n respectively and carry the downstream unicast data of each of the ONUs respectively, so as to obtain a multiple-wavelength optical signal having the wavelengths of ⁇ 1 ⁇ n and ⁇ m ; and the multiple-wavelength optical signal is transmitted to the multiplexer/demultiplexer through the first optical circulator.
  • the above specific wavelength laser, modulator and optical amplifier constitute the multicast service data transmission pre-
  • the multiplexer/demultiplexer divides the received optical signal to obtain optical signals at different wavelengths, concurrently outputs the optical signal having the wavelength of ⁇ m , which carries the multicast service data, through n output terminals; and outputs the n channels of optical signals, which have the wavelengths of ⁇ 1 ⁇ n respectively and carry the downstream unicast data of each of the ONUs respectively, to corresponding output terminals, respectively.
  • the optical signal respectively outputted from each of the output terminals of the multiplexer/demultiplexer at least includes the optical signal having the wavelength of ⁇ m and one channel of optical signal among the optical signals having the wavelengths of ⁇ 1 ⁇ n .
  • the optical signal having the wavelength of ⁇ m carries the multicast service data; and the optical signals having the wavelengths of ⁇ 1 ⁇ n carry the downstream unicast data of each of the ONUs, respectively.
  • the optical signal outputted from the output terminal 1 includes two wavelengths of ⁇ 1 and ⁇ m
  • the optical signal outputted from the output terminal 2 includes two wavelengths of ⁇ 2 and ⁇ m
  • the optical signal outputted from the output terminal n includes two wavelengths of ⁇ n and ⁇ m .
  • output signals are transmitted to the n ONUs of the WDM-PON system respectively.
  • the ONU downstream processing module divides the optical signal from the multiplexer/demultiplexer to obtain the optical signal having the wavelength of ⁇ m, , which carries the multicast service data, and one channel of optical signal carrying the downstream unicast data of the ONU among the optical signals having the wavelengths of ⁇ 1 ⁇ n . After the two channels of optical signals are converted into electrical signals and further demodulated respectively, the multicast service data and the unicast data corresponding to the ONU itself could be obtained.
  • the OLT is capable of capturing a request for joining a multicast group from an ONU, and implementing the function of a multicast agent in which the OLT determines, according to the result of the authentication returned from an superior multicast server, whether the ONU has the right to receive data of the requested multicast group, and sends a multicast service control message to the ONU according to the result of the determination.
  • the ONU filters data of the multicast group, which is permitted by the OLT to be received by the ONU, according to the multicast service control message from the OLT, and discards data of the multicast group, which is not permitted by the OLT to be received by the ONU.
  • the data of the multicast group is transmitted to a subordinate equipment for further process.
  • the WDM-PON system shown in Fig.3 may further provide CATV service.
  • Fig.5 shows a schematic diagram of the system structure of a WDM-PON capable of concurrently providing CATV service and multicast service according to another preferred embodiment of the present invention.
  • the WDM-PON which provides CATV service and multicast service for the ONUs, is made the following improvements on the basis of the structure as shown in Fig.4 .
  • an optical amplifier for connecting the outputting terminal to the multiplexer is added to amplify an optical signal having the wavelength of ⁇ b , which carries a CATV signal from the outside.
  • the specific wavelength laser, the modulator, the optical amplifier connected to the modulator and the optical amplifier for amplifying the CATV signal constitute the multicast service data transmission pre-processing module shown in Fig.3 .
  • the multiplexer/demultiplexer in the downstream direction, the multiplexer/demultiplexer further performs power allocation on the optical signal having the specific wavelength, i.e., ⁇ b , which carries the CATV signal, among the optical signals from the OLT. That is, the optical signal with the specific wavelength of ⁇ b is concurrently outputted to each of the output terminals.
  • the optical signal outputted from each output terminal of the multiplexer/demultiplexer includes the optical signal with the wavelength of ⁇ m which carries the multicast data, the optical signal with the wavelength of ⁇ b which carries the CATV signal, and one channel of optical signal among the optical signals having the wavelengths of ⁇ 1 ⁇ n which carry the downstream unicast data of each of the ONUs.
  • the optical signal having the wavelength of ⁇ b which carries the CATV signal is divided by the coarse wavelength division multiplexer.
  • the PD array and the modulator array further include a PD and a modulator for performing optical/electrical conversion and demodulation to the optical signal having the wavelength of ⁇ b , which carries the CATV signal, so as to obtain the CATV data at each of the ONUs.
  • the OLT may realize controllable receipt of CATV service in a similar manner with that for realizing multicast service, such as by transmitting a broadcast control message.
  • the WDM-PON system may realize multicast or broadcast service. Further, because only one or more divided wavelengths are used for carrying one or more channels of the multicast service data in the above WDM-PON system, the problem in the related art that the number of replicas needs to be consistent with the number of users to whom the multicast service data is to be transmitted can be effectively avoided, thereby the bandwidth resource of the WDM-PON system can be greatly saved. Further, the load scheduled by the OLT can be reduced, and there is no need to support a complex multicast scheduling protocol in the OLT, thereby the complexity of the system is reduced.
  • the multiplexer/demultiplexer used in the present WDM-PON system is different from that used in the related WDM-PON system.
  • a novel multiplexer/demultiplexer is provided, which is used in the above WDM-PON system, has the function of an AWG, and is capable of broadcasting optical signals having some specific wavelengths.
  • Fig.6 shows the structure of such multiplexer/demultiplexer.
  • the multiplexer/demultiplexer in the present embodiment includes a coarse wavelength demultiplexer, which is configured to divide the received optical signals to obtain optical signals having specific wavelengths (for example, ⁇ b and/or ⁇ m and/or other specific wavelengths) carrying the multicast service and optical signals carrying the downstream unicast data of each of the ONUs.
  • a coarse wavelength demultiplexer which is configured to divide the received optical signals to obtain optical signals having specific wavelengths (for example, ⁇ b and/or ⁇ m and/or other specific wavelengths) carrying the multicast service and optical signals carrying the downstream unicast data of each of the ONUs.
  • the multiplexer/demultiplexer further includes a 1: n AWG, being configured to divide the optical signals with the wavelengths of ⁇ 1 ⁇ n from the coarse wavelength demultiplexer to obtain n channels of optical signals respectively having respective wavelength among the wavelengths of ⁇ 1 ⁇ n , and route the optical signals to the n output terminals of the AWG, where n corresponds to the number of the ONUs in the WDM-PON system.
  • the multiplexer/demultiplexer further includes a splitter having a splitting ratio of 1: n .
  • the splitter is configured to perform power allocation on the optical signals having specific wavelengths (for example, ⁇ b and/or ⁇ m and/or other specific wavelengths) from the coarse wavelength demultiplexer, split the power of the optical signals into n portions, and output the n portions of the split optical signals to n combiners respectively.
  • the multiplexer/demultiplexer further includes n combiners, each of which is connected to one output terminal of the AWG and one output terminal of the splitter, for coupling the optical signals having specific wavelengths from the splitter to each of the output branches of the AWG.
  • the functions of the coarse wavelength demultiplexer, the splitter and the combiners may be integrated into a separate AWG, and the multiplexer/demultiplexer may be realized with the coarse wavelength demultiplexer, the splitter, the combiners, a N:N Wavelength Grating Router (WGR), etc..
  • WGR Wavelength Grating Router
  • each of the n output terminals of the multiplexer/demultiplexer in Fig.6 includes the optical signals having specific wavelengths for carrying the multicast service.
  • some ONUs in the WDM-PON system may not support the multicast service, and thus it is not necessary to concurrently output the multicast service to all of the output terminals of the multiplexer/demultiplexer.
  • a simplified multiplexer/demultiplexer according to another preferred embodiment of the present invention is provided in Fig.7 .
  • the multiplexer/demultiplexer includes a coarse wavelength demultiplexer, which is configured to divide the received optical signals to obtain optical signals having specific wavelengths (for example, ⁇ b and/or ⁇ m and/or other specific wavelengths) for carrying the multicast service and optical signals for carrying the downstream unicast data of each of the ONUs.
  • a coarse wavelength demultiplexer which is configured to divide the received optical signals to obtain optical signals having specific wavelengths (for example, ⁇ b and/or ⁇ m and/or other specific wavelengths) for carrying the multicast service and optical signals for carrying the downstream unicast data of each of the ONUs.
  • the multiplexer/demultiplexer further includes a 1: n AWG, which is configured to divide the optical signals having the wavelengths of ⁇ 1 ⁇ n from the coarse wavelength demultiplexer to obtain n channels of optical signals respectively having respective wavelength among the wavelengths of ⁇ 1 ⁇ n , and route the optical signals to the n output terminals of the AWG, where n corresponds to the number of the ONUs in the WDM-PON system.
  • the multiplexer/demultiplexer further includes a splitter having a splitting ratio of 1: a .
  • the splitter is configured to perform power allocation on the optical signals having specific wavelengths (for example, ⁇ b and/or ⁇ m ) from the coarse wavelength demultiplexer, split the power of the optical signals into a portions, and output the a portions of the split optical signals to a combiners respectively, where a is a natural number that is larger than or equal to 1 and smaller than n and corresponds to the number of the ONUs supporting the multicast service in the WDM-PON system.
  • the multiplexer/demultiplexer further includes a combiners, each of which is connected to one output terminal of the AWG and one output terminal of the splitter, for coupling the optical signals having specific wavelengths from the splitter to a output branches of the AWG.
  • the above multiplexer/demultiplexer may concurrently transmit the optical signals carrying the multicast service to each ONU of the WDM-PON system by performing power allocation, it is possible to transmit multicast or broadcast data at a separate wavelength, thereby the bandwidth resource of the system can be greatly saved.
  • the method mainly includes the following steps.
  • Step A the OLT separates, from downstream data from the superior equipment, multicast service data and each channel of downstream unicast data to be transmitted to each of the ONUs in the WDM-PON system.
  • Step B the OLT carries the multicast service data onto an optical signal having specific wavelength, and carries the downstream unicast date of each of the ONUs onto an optical signal having predetermined downstream wavelength for each of the ONUs respectively.
  • Step C the optical signal having specific wavelength and the each channel of optical signal carrying the downstream unicast data of each of the ONUs are multiplexed and transmitted to the multiplexer/demultiplexer in the ONU.
  • Step D the multiplexer/demultiplexer separates, from the received optical signal, the optical signal having specific wavelength and each channel of optical signal carrying the downstream unicast data for each of the ONUs according to wavelength, outputs the optical signal having specific wavelength to all or parts of the ONUs, and outputs each channel of optical signal carrying the downstream unicast data of an ONU to the corresponding ONU.
  • Step E each of the ONUs in the WDM-PON system separates, from the received optical signal, the optical signal having specific wavelength and the optical signal carrying the downstream unicast data of the ONU itself, performing optical/electrical conversion and demodulation to both of the optical signals to obtain the multicast service data and the downstream unicast data of the ONU itself, and transmits the multicast service data to the lower equipment for further process.
  • the OLT can control whether an ONU can receive the multicast service data, by transmitting a corresponding control message to the ONU.
  • the multicast service may be general multicast service, broadcast service, or CATV service.
  • CATV service the OLT transmits a broadcast control message to the ONU to prohibit the ONU from receiving the CATV broadcast signal or permit the ONU to receive the CATV broadcast signal.
  • the ONU After receiving the broadcast control message, if the broadcast control message prohibits the ONU from receiving the CATV broadcast signal, the ONU turns off an optical/electrical converter so as not to receive the CATV broadcast signal, and if the broadcast control message permits the ONU to receive the CATV broadcast signal, the ONU turns on the optical/electrical converter so as to receive the CATV broadcast signal.
  • the multicast or broadcast can be realized in the WDM-PON system. Because the multicast service is only transmitted once at a specific wavelength in the WDM-PON system, the problem of the wasting of the bandwidth resource caused by the manner of bandwidth multiple replicas in the related art can be solved.
  • the bandwidth resource of the system can be greatly saved, and the complexity of the OLT can be reduced for there is no need to apply a complex multicast protocol in the OLT.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
EP07702163.2A 2006-01-23 2007-01-22 Passives optisches netzwerk, geräte und verfahren zur unterstützung des multicast-dienstes Active EP1981196B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200610001979XA CN101009530B (zh) 2006-01-23 2006-01-23 支持组播类业务的无源光网络、复用/解复用器及方法
PCT/CN2007/000233 WO2007082490A1 (en) 2006-01-23 2007-01-22 A passive optical network, equipment and method for supporting the multicast service

Publications (3)

Publication Number Publication Date
EP1981196A1 true EP1981196A1 (de) 2008-10-15
EP1981196A4 EP1981196A4 (de) 2009-06-03
EP1981196B1 EP1981196B1 (de) 2013-07-03

Family

ID=38287277

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07702163.2A Active EP1981196B1 (de) 2006-01-23 2007-01-22 Passives optisches netzwerk, geräte und verfahren zur unterstützung des multicast-dienstes

Country Status (4)

Country Link
US (1) US20080304830A1 (de)
EP (1) EP1981196B1 (de)
CN (1) CN101009530B (de)
WO (1) WO2007082490A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009062449A1 (en) 2007-11-16 2009-05-22 Huawei Technologies Co., Ltd. A control method, device and system for multicast access in passive optical network
EP2109256A4 (de) * 2007-09-28 2010-01-06 Huawei Tech Co Ltd Pon-gruppen-rundfunk-kommunikationssystem, gruppenrundfunk-verwaltungsverfahren und zugehörige vorrichtung
CN101547381B (zh) * 2009-05-08 2011-08-24 北京科技大学 一种具有信号功率衰减限制的全光网内的组播rwa方法
CN104730645A (zh) * 2015-01-28 2015-06-24 浙江大学 一种用于模式复用-波分复用混合技术的复用-解复用器
US9559802B1 (en) 2014-09-30 2017-01-31 Google Inc. Optical network remote node for G-PON and WDM-PON
EP3588808A1 (de) * 2018-06-21 2020-01-01 Nokia Solutions and Networks Oy Twdm-pon mit variablem teilungsverhältnis
EP2656527B1 (de) * 2010-12-20 2020-08-12 Telefonaktiebolaget LM Ericsson (publ) Passive optische netzwerkanordnung und verfahren

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101114885B (zh) 2007-09-05 2011-07-27 华中科技大学 混合波分时分复用无源光网络系统、终端及信号传输方法
CN101247666B (zh) * 2008-03-24 2011-04-20 中兴通讯股份有限公司 一种基于光网络系统的保护装置及方法
CN101296526B (zh) * 2008-06-25 2011-04-13 山东大学 基于无源光网络的铁路专网通信系统
KR101000518B1 (ko) * 2008-12-22 2010-12-14 한국전자통신연구원 Ｗｄｍ－ｐｏｎ에서의 멀티캐스트 또는 브로드캐스트 프레임 전송방법 및 그 장치
US20110097083A1 (en) * 2009-10-07 2011-04-28 Trex Enterprises Corp. Data center optical network
CN101877801A (zh) * 2010-05-28 2010-11-03 浙江大学 基于半导体光放大器的波分复用无源光网络光线路终端
ES2436884T3 (es) * 2011-06-20 2014-01-07 Ntt Docomo, Inc. Sistema de comunicación y procedimiento para transmitir datos a uno o más grupos de nodos en un sistema de comunicación
EP2731287A4 (de) * 2012-05-23 2014-12-31 Huawei Tech Co Ltd Verfahren, system und vorrichtung zur datenübertragung in einem passiven optischen netzwerk (pon) mit mehreren wellenlängen
US8867920B2 (en) * 2012-07-24 2014-10-21 International Business Machines Corporation Optical de-multiplexing device
US9366691B2 (en) * 2013-05-02 2016-06-14 Halliburton Energy Services, Inc. Multiplexed fiber optic sensing system and method
US9602311B2 (en) * 2014-02-06 2017-03-21 The Board Of Trustees Of The Leland Stanford Junior University Dual-mode network
JP6427992B2 (ja) * 2014-06-30 2018-11-28 富士通株式会社 光伝送システム、送信機、受信機、及び、光伝送方法
US10250353B2 (en) 2014-11-10 2019-04-02 Perfectvision Manufacturing, Inc. Electromagnetic signal transport and distribution systems
US9806844B2 (en) * 2014-11-10 2017-10-31 Perfectvision Manufacturing, Inc. Electromagnetic signal transport and distribution system
KR20160107866A (ko) * 2015-03-06 2016-09-19 한국전자통신연구원 동적 파당 할당 기능을 갖는 중앙 기지국 장치
CN104837079B (zh) * 2015-04-15 2018-08-28 北京邮电大学 波分复用无源光网络中的多波长组播装置与方法
US9749080B2 (en) * 2015-11-11 2017-08-29 Google Inc. TWDM passive network with extended reach and capacity
CN107666362B (zh) * 2016-07-28 2020-10-27 全球能源互联网研究院 一种电力通信多业务隔离接入系统及接入方法
US10200144B1 (en) 2017-09-15 2019-02-05 Nokia Of America Corporation Communication system for connecting network hosts
CN110308522A (zh) * 2019-07-09 2019-10-08 中山市标致电子科技有限公司 一种稀疏波分复用器
CN112217593B (zh) * 2019-07-12 2023-01-13 中国移动通信有限公司研究院 一种新前传网络的管理控制方法和设备
WO2023011699A1 (en) * 2021-08-02 2023-02-09 Telefonaktiebolaget Lm Ericsson (Publ) Communications network optical apparatus and method of providing an optical signal
KR102491712B1 (ko) * 2022-07-07 2023-01-27 (주)엠이엘 텔레콤 광섬유 연결성 측정기
US20240072897A1 (en) * 2022-08-31 2024-02-29 Panduit Corp. Apparatus and methods for fiber optic bi-directional local area networks
US20250099749A1 (en) 2023-09-21 2025-03-27 Boston Scientific Neuromodulation Corporation Electrical stimulation cuff devices and systems and electrode arrangements therefor

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5440416A (en) * 1993-02-24 1995-08-08 At&T Corp. Optical network comprising a compact wavelength-dividing component
US5926298A (en) * 1996-08-30 1999-07-20 Lucent Technologies Inc. Optical multiplexer/demultiplexer having a broadcast port
WO2000074278A1 (en) 1999-05-28 2000-12-07 Advanced Fibre Communications Wdm passive optical network with broadcast overlay
KR100367086B1 (ko) * 2000-12-23 2003-01-09 한국전자통신연구원 음성 및 광대역 데이터 서비스를 위한 광종단 장치
KR100496710B1 (ko) * 2002-01-21 2005-06-28 노베라옵틱스코리아 주식회사 주입된 비간섭성 광에 파장 잠김된 광원을 이용한 양방향파장분할다중방식 수동형 광 네트워크
MXPA04010612A (es) * 2002-04-23 2005-07-14 Alza Corp Sistemas analgesicos transdermicos con potencial reducido de abuso.
KR20040026177A (ko) * 2002-09-23 2004-03-30 삼성전자주식회사 방송 및 통신 신호를 수용할 수 있는 광가입자망 시스템
KR100532307B1 (ko) * 2003-03-17 2005-11-29 삼성전자주식회사 방송, 통신 융합이 가능한 파장 분할 다중화 방식의수동형 광 가입자망
US7327771B2 (en) * 2003-10-21 2008-02-05 Electronics And Telecommunications Research Institute WDM-PON system with optical wavelength alignment function
US20050129404A1 (en) * 2003-12-10 2005-06-16 Kim Byoung W. Apparatus for providing broadcasting service through overlay structure in WDM-PON
CN100461654C (zh) * 2003-12-12 2009-02-11 武汉华工飞腾光子科技有限公司 基于波分多址的以太网无源光网络及其传输数据的方法
KR100605925B1 (ko) * 2004-01-27 2006-08-01 삼성전자주식회사 파장분할다중 방식의 수동형 광 가입자망
US9413487B2 (en) * 2004-06-01 2016-08-09 Alcatel Lucent System and method for providing packetized video over an optical network
KR100570842B1 (ko) * 2004-12-13 2006-04-13 한국전자통신연구원 파장 분할 다중화 수동 광 가입자망(ｗｄｍ-ｐｏｎ)에서의통신, 방송 융합을 위한 동적 멀티캐스트 그룹 관리 및서비스 파장 할당방법
KR100703388B1 (ko) * 2004-12-29 2007-04-03 삼성전자주식회사 광송수신기 및 이를 이용한 수동형 광가입자망
US7522838B2 (en) * 2005-10-20 2009-04-21 Fujitsu Limited Distribution components for a wavelength-sharing network
US7603036B2 (en) * 2006-01-06 2009-10-13 Fujitsu Limited System and method for managing network components in a hybrid passive optical network

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2109256A4 (de) * 2007-09-28 2010-01-06 Huawei Tech Co Ltd Pon-gruppen-rundfunk-kommunikationssystem, gruppenrundfunk-verwaltungsverfahren und zugehörige vorrichtung
WO2009062449A1 (en) 2007-11-16 2009-05-22 Huawei Technologies Co., Ltd. A control method, device and system for multicast access in passive optical network
EP2091187A4 (de) * 2007-11-16 2009-12-02 Huawei Tech Co Ltd Ein kontrollverfahren, gerät und system für multicast-zugang in passiven optischen netzen
CN101547381B (zh) * 2009-05-08 2011-08-24 北京科技大学 一种具有信号功率衰减限制的全光网内的组播rwa方法
EP2656527B1 (de) * 2010-12-20 2020-08-12 Telefonaktiebolaget LM Ericsson (publ) Passive optische netzwerkanordnung und verfahren
US9559802B1 (en) 2014-09-30 2017-01-31 Google Inc. Optical network remote node for G-PON and WDM-PON
CN104730645A (zh) * 2015-01-28 2015-06-24 浙江大学 一种用于模式复用-波分复用混合技术的复用-解复用器
EP3588808A1 (de) * 2018-06-21 2020-01-01 Nokia Solutions and Networks Oy Twdm-pon mit variablem teilungsverhältnis

Also Published As

Publication number Publication date
US20080304830A1 (en) 2008-12-11
EP1981196B1 (de) 2013-07-03
CN101009530B (zh) 2012-02-15
EP1981196A4 (de) 2009-06-03
WO2007082490A1 (en) 2007-07-26
CN101009530A (zh) 2007-08-01

Similar Documents

Publication Publication Date Title
EP1981196B1 (de) Passives optisches netzwerk, geräte und verfahren zur unterstützung des multicast-dienstes
KR100605855B1 (ko) 방송 스위칭을 통한 방송 통신 융합 ｆｔｔｈ망
US8554078B2 (en) Passive optical network with plural optical line terminals
EP2122878B1 (de) Abwärtskompatible pon-koexistenz
EP2209228B1 (de) Endgerät für eine optische leitung, remoteknoteneinheit, verfahren für optische übertragungen und entsprechendes system
US8995836B2 (en) Passive optical network with adaptive filters for upstream transmission management
US20100021164A1 (en) Wdm pon rf/video broadcast overlay
CN101953098A (zh) 通过波分复用无源光网络的时分多址
WO2008003215A1 (en) A method, system and device for realizing broadcast in wdm-pon
WO2007071154A1 (fr) Reseau optique passif a multiplexage par repartition en longueur d'onde et son procede de mise en oeuvre
JP2004096737A (ja) 放送／通信統合型受動光ネットワークシステム
CN101098206B (zh) 一种无源光网络系统及其光路处理方法
CN101047464B (zh) 一种用于波分复用无源光网络的受控组播方法和系统
CN101127571A (zh) 一种wdm-pon系统共享的公共光源及光源共享的方法
CN101119163B (zh) 一种实现组播业务的wdm-pon方法、系统及光线路终端
US12341602B2 (en) Optical line terminal, optical network unit, and optical communications system
KR100990780B1 (ko) 파장 분할 다중화 방식의 수동형 광 가입자망 시스템
JP2008543213A (ja) 波長分割多重化方式の受動型光加入者網システム
KR101231927B1 (ko) 단일 채널을 이용하여 상·하향 신호의 전송이 가능하도록해주는 ｗｄｍ-ｐｏｎ 시스템 및 그 신호 전송 방법
KR100746467B1 (ko) 영상서비스 제공을 위한 기가비트 ｗｄｍ-ｐｏｎ 시스템 및그 신호 전송방법
JPWO2007083384A1 (ja) 受動光網システムにおける片方向伝送信号分配方法、局側装置及び加入者宅側装置
Nerkar Narendra et al. Design of AWG-based WDM-PON architecture With multicast capability

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20080804

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

A4 Supplementary search report drawn up and despatched

Effective date: 20090508

17Q First examination report despatched

Effective date: 20110504

DAX Request for extension of the european patent (deleted)
REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 602007031372

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: H04J0014020000

Ipc: H04B0010250000

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIC1 Information provided on ipc code assigned before grant

Ipc: H04J 14/02 20060101ALI20130129BHEP

Ipc: H04B 10/25 20130101AFI20130129BHEP

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 620256

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130715

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602007031372

Country of ref document: DE

Effective date: 20130829

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130703

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 620256

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130703

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20130703

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130626

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130703

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131103

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130703

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130703

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131104

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130703

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130703

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130703

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130703

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130703

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131014

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131004

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130703

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130703

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130703

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130703

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130703

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130703

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130703

26N No opposition filed

Effective date: 20140404

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602007031372

Country of ref document: DE

Effective date: 20140404

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130703

Ref country code: LU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140122

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140131

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140131

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140122

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130703

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130703

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20070122

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20241205

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20241209

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20241203

Year of fee payment: 19